police eventually arrested john allen muhammad and lee boyd malvo for the shootings. they were both convicted. muhammad was executed in 2009. malvo, who was 17 at the time, is currently serving a life sentence without the possibility of parole in virginia. >>> the penn quarter neighborhood in northwest washington is remembering a prominent local professor killed in a freak accident. police say rhett leverett was killed yesterday morning when a car jumped the curb when he was walking his dog. investigators say the driver of the car had a medical emergency and lost control of the wheel. leverett was a professor at marymount university and a fixture in the penn quarter neighborhood. >> the mayor of penn quarter is what i would jokingly call him. he'd be in his rounds checking on things, checking on other residents, and checking on the building. >> he was just a mainstay of lafayette, where we live. he's going to be really, really missed. >> leverett's dog beth was not hurt in the accident. she is now being cared for by a neighbor. >> 6:07 is the time. a veteran police of